ASAHI KASEI ADVANCE CORPORATION List of Products and Services

The "Grout Sat Holder" is a product that allows for easy installation and good workability, enabling grout injection without processing the structure, while also preventing the outflow of the injected grout material. The joints of the expandable sheet feature a triple structure with a sealing effect from resin and surface fasteners, as well as resistance to tensile loads from double rope binding, ensuring reliable construction. 【Features】 ○ Easy - The sheet is expandable, making underwater construction easy. ○ Reliable - The joints with the casing and steel pipes have an inner sealing material and two rows of tightening wires, preventing grout leakage. ○ Economical - The hose connection to the grout injection port can be done in advance on land, making construction easy and economical. For more details, please contact us.

The "Grout Jacket" is a method used in civil engineering works such as ports and rivers, where a grout jacket (tube-shaped bag) is inserted into the joint section during the foundation and temporary cutoff using steel pipe sheet piles, and grout material is injected and filled to prevent water from entering through the joint. 【Product Lineup】 ○W-840B-250 ○W-840B-190 For more details, please contact us.

We would like to introduce a case where we proposed the "silt fence (pollution prevention membrane) + fabric formwork for underwater construction." In this project, the erosion of the riverbed caused by the water flow discharged from the rainwater drainage facility was a concern. We proposed the fabric formwork method, which allows for underwater construction, for riverbed protection work, and it was adopted. Additionally, to address the potential impact on the surrounding environment due to pollution generated when injecting concrete into the fabric formwork underwater, we employed the silt fence method as a countermeasure against pollution diffusion. This contributed to preventing pollution from spreading downstream. 【Case Overview】 ■ Adopted Method: Silt Fence (Pollution Prevention Membrane) - Prevents the diffusion of pollution generated during land reclamation, dredging, riverbank, river, and dam construction, protecting nearby marine resources. ■ Adopted Method: Fabric Formwork "FabriForm" *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case that adopted the "Conback Method" for the construction of a cast-in-place foundation in the existing bridge pier's lower protective layer in a narrow construction area. To allow construction machinery to enter, it was necessary to implement temporary river enclosures and pump out water. However, carrying out temporary river diversions required significant costs and time, and there was a desire for a protective layer construction method that could be executed without diverting the river. By adopting this method, we were able to eliminate the costs associated with temporary works such as river diversions, leading to savings in construction costs and a reduction in construction period, which pleased the client. 【Case Overview】 ■Challenges - It was necessary to remove the bagged stone protective layer material that had been installed as a protective layer for the existing road bridge pier and to install new protective layer blocks. ■Results - We were able to eliminate temporary construction costs. - We achieved savings in construction costs and a reduction in the construction period. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where multiple sinkholes occurred in flat areas beside the road less than a year after the completion of road construction on reclaimed land. The areas where the issues occurred used a short-fiber non-woven sand control sheet. It is estimated that the sand control sheet was laid on the stone embankment and was exposed to seawater for a certain period until the soil was filled in. During this time, it is presumed that the short fibers gradually flowed out into the seawater, resulting in a decrease in the thickness and strength of the product. 【Proposed Countermeasure Method】 ■ For sand control sheets used in ports, we recommend long-fiber non-woven fabric "Posible." - Excellent mechanical properties such as tensile strength - Superior resistance to water, oil, weather, corrosion, chemicals, and heat - Long-term stability in soil *For more details, please download the PDF or feel free to contact us.